/*!
 * Crypto-JS v1.1.0
 * http://code.google.com/p/crypto-js/
 * Copyright (c) 2009, Jeff Mott. All rights reserved.
 * http://code.google.com/p/crypto-js/wiki/License
 */
(function () {

// Shortcut
    var util = Crypto.util;

// Public API
    var MD5 = Crypto.MD5 = function (message, options) {
        var digestbytes = util.wordsToBytes(MD5._md5(message));
        return options && options.asBytes ? digestbytes :
            options && options.asString ? util.bytesToString(digestbytes) :
                util.bytesToHex(digestbytes);
    };

// The core
    MD5._md5 = function (message) {

        var m = util.stringToWords(message),
            l = message.length * 8,
            a = 1732584193,
            b = -271733879,
            c = -1732584194,
            d = 271733878;

        // Swap endian
        for (var i = 0; i < m.length; i++) {
            m[i] = ((m[i] << 8) | (m[i] >>> 24)) & 0x00FF00FF |
                ((m[i] << 24) | (m[i] >>> 8)) & 0xFF00FF00;
        }

        // Padding
        m[l >>> 5] |= 0x80 << (l % 32);
        m[(((l + 64) >>> 9) << 4) + 14] = l;

        for (var i = 0; i < m.length; i += 16) {

            var aa = a,
                bb = b,
                cc = c,
                dd = d;

            a = MD5._ff(a, b, c, d, m[i + 0], 7, -680876936);
            d = MD5._ff(d, a, b, c, m[i + 1], 12, -389564586);
            c = MD5._ff(c, d, a, b, m[i + 2], 17, 606105819);
            b = MD5._ff(b, c, d, a, m[i + 3], 22, -1044525330);
            a = MD5._ff(a, b, c, d, m[i + 4], 7, -176418897);
            d = MD5._ff(d, a, b, c, m[i + 5], 12, 1200080426);
            c = MD5._ff(c, d, a, b, m[i + 6], 17, -1473231341);
            b = MD5._ff(b, c, d, a, m[i + 7], 22, -45705983);
            a = MD5._ff(a, b, c, d, m[i + 8], 7, 1770035416);
            d = MD5._ff(d, a, b, c, m[i + 9], 12, -1958414417);
            c = MD5._ff(c, d, a, b, m[i + 10], 17, -42063);
            b = MD5._ff(b, c, d, a, m[i + 11], 22, -1990404162);
            a = MD5._ff(a, b, c, d, m[i + 12], 7, 1804603682);
            d = MD5._ff(d, a, b, c, m[i + 13], 12, -40341101);
            c = MD5._ff(c, d, a, b, m[i + 14], 17, -1502002290);
            b = MD5._ff(b, c, d, a, m[i + 15], 22, 1236535329);

            a = MD5._gg(a, b, c, d, m[i + 1], 5, -165796510);
            d = MD5._gg(d, a, b, c, m[i + 6], 9, -1069501632);
            c = MD5._gg(c, d, a, b, m[i + 11], 14, 643717713);
            b = MD5._gg(b, c, d, a, m[i + 0], 20, -373897302);
            a = MD5._gg(a, b, c, d, m[i + 5], 5, -701558691);
            d = MD5._gg(d, a, b, c, m[i + 10], 9, 38016083);
            c = MD5._gg(c, d, a, b, m[i + 15], 14, -660478335);
            b = MD5._gg(b, c, d, a, m[i + 4], 20, -405537848);
            a = MD5._gg(a, b, c, d, m[i + 9], 5, 568446438);
            d = MD5._gg(d, a, b, c, m[i + 14], 9, -1019803690);
            c = MD5._gg(c, d, a, b, m[i + 3], 14, -187363961);
            b = MD5._gg(b, c, d, a, m[i + 8], 20, 1163531501);
            a = MD5._gg(a, b, c, d, m[i + 13], 5, -1444681467);
            d = MD5._gg(d, a, b, c, m[i + 2], 9, -51403784);
            c = MD5._gg(c, d, a, b, m[i + 7], 14, 1735328473);
            b = MD5._gg(b, c, d, a, m[i + 12], 20, -1926607734);

            a = MD5._hh(a, b, c, d, m[i + 5], 4, -378558);
            d = MD5._hh(d, a, b, c, m[i + 8], 11, -2022574463);
            c = MD5._hh(c, d, a, b, m[i + 11], 16, 1839030562);
            b = MD5._hh(b, c, d, a, m[i + 14], 23, -35309556);
            a = MD5._hh(a, b, c, d, m[i + 1], 4, -1530992060);
            d = MD5._hh(d, a, b, c, m[i + 4], 11, 1272893353);
            c = MD5._hh(c, d, a, b, m[i + 7], 16, -155497632);
            b = MD5._hh(b, c, d, a, m[i + 10], 23, -1094730640);
            a = MD5._hh(a, b, c, d, m[i + 13], 4, 681279174);
            d = MD5._hh(d, a, b, c, m[i + 0], 11, -358537222);
            c = MD5._hh(c, d, a, b, m[i + 3], 16, -722521979);
            b = MD5._hh(b, c, d, a, m[i + 6], 23, 76029189);
            a = MD5._hh(a, b, c, d, m[i + 9], 4, -640364487);
            d = MD5._hh(d, a, b, c, m[i + 12], 11, -421815835);
            c = MD5._hh(c, d, a, b, m[i + 15], 16, 530742520);
            b = MD5._hh(b, c, d, a, m[i + 2], 23, -995338651);

            a = MD5._ii(a, b, c, d, m[i + 0], 6, -198630844);
            d = MD5._ii(d, a, b, c, m[i + 7], 10, 1126891415);
            c = MD5._ii(c, d, a, b, m[i + 14], 15, -1416354905);
            b = MD5._ii(b, c, d, a, m[i + 5], 21, -57434055);
            a = MD5._ii(a, b, c, d, m[i + 12], 6, 1700485571);
            d = MD5._ii(d, a, b, c, m[i + 3], 10, -1894986606);
            c = MD5._ii(c, d, a, b, m[i + 10], 15, -1051523);
            b = MD5._ii(b, c, d, a, m[i + 1], 21, -2054922799);
            a = MD5._ii(a, b, c, d, m[i + 8], 6, 1873313359);
            d = MD5._ii(d, a, b, c, m[i + 15], 10, -30611744);
            c = MD5._ii(c, d, a, b, m[i + 6], 15, -1560198380);
            b = MD5._ii(b, c, d, a, m[i + 13], 21, 1309151649);
            a = MD5._ii(a, b, c, d, m[i + 4], 6, -145523070);
            d = MD5._ii(d, a, b, c, m[i + 11], 10, -1120210379);
            c = MD5._ii(c, d, a, b, m[i + 2], 15, 718787259);
            b = MD5._ii(b, c, d, a, m[i + 9], 21, -343485551);

            a += aa;
            b += bb;
            c += cc;
            d += dd;

        }

        return util.endian([a, b, c, d]);

    };

// Auxiliary functions
    MD5._ff = function (a, b, c, d, x, s, t) {
        var n = a + (b & c | ~b & d) + (x >>> 0) + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    };
    MD5._gg = function (a, b, c, d, x, s, t) {
        var n = a + (b & d | c & ~d) + (x >>> 0) + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    };
    MD5._hh = function (a, b, c, d, x, s, t) {
        var n = a + (b ^ c ^ d) + (x >>> 0) + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    };
    MD5._ii = function (a, b, c, d, x, s, t) {
        var n = a + (c ^ (b | ~d)) + (x >>> 0) + t;
        return ((n << s) | (n >>> (32 - s))) + b;
    };

// Package private blocksize
    MD5._blocksize = 16;

})();
